Why does Kendo Angular WindowService.open() scroll the page to the bottom when opening a modal?

I’m getting a weird scrolling jump whenever I open a Kendo Angular modal via my shared WindowService. As soon as I call:

ts Copy Edit this.windowService.open({ title: 'My Modal', content: SomeComponent, width: 600, top: window.pageYOffset + 50 }); the browser immediately scrolls all the way down so that the new (which is appended to my deep ) is in view. The modal itself renders correctly and stays fixed, but the page has already shifted.

I tried:

Forcing a fixed top: 200 → no jump, because the window opens in the default container near the top.

Decorating WindowService.open() to capture window.pageYOffset and restore it after open → works, but I don’t understand why the focus/append behavior causes the scroll in the first place.

Repro steps:

Add inside a deeply nested component.

Inject WindowService and call open() with a dynamic top based on pageYOffset.

Observe the page instantly scroll down when the modal opens.

What exactly in Kendo’s open/focus/append logic triggers that scroll‐to‐view, and how can I prevent it without having to restore the scroll position manually?

i try to open the modal i want without the page scrolling to the bottom for no reason, cause the modal is not there.

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